diff --git a/synapse/rest/admin/users.py b/synapse/rest/admin/users.py
index fe1c4471049..a9645e4af7c 100644
--- a/synapse/rest/admin/users.py
+++ b/synapse/rest/admin/users.py
@@ -183,9 +183,7 @@ def _filter(a: attr.Attribute) -> bool:
 
         return HTTPStatus.OK, ret
 
-    def _parse_parameter_deactivated(
-        self, request: SynapseRequest
-    ) -> Optional[bool]:
+    def _parse_parameter_deactivated(self, request: SynapseRequest) -> Optional[bool]:
         """
         Return None (no filtering) if `deactivated` is `true`, otherwise return `False`
         (exclude deactivated users from the results).